TY - JOUR AU - R Gupta AU - John Burnett AU - U Griesmann AU - M Walhout C2 - Applied Optics DA - 1998-01-01 LA - en M1 - 37 PB - Applied Optics PY - 1998 TI - Absolute refractive indices and thermal coefficients of fused silica and calcium fluoride near 193 nm ER -